A Sainsbury's till worker flipped her lid at a customer in London recently, refusing to scan a lady's shopping until she stopped blabbing away on her mobile phone.

The shopper, 26-year-old Jo Clarke, says the woman working the till at the Crayford branch of the supermarket told her "I will not check your shopping out until you get off your mobile phone."

An offended Clarke later told the Standard: "I was dumbfounded at the time so just hung up. I don’t know what she was playing at. I couldn't believe how rude she was. When did she have the right to give me a lecture on checkout etiquette?"

She added: "I won’t be shopping there again -- I’ll go to Waitrose instead."

Sainsbury's has apologised to Clarke, pointing out that it doesn't actually have an official stance when it comes to serving people who may be talking on their phones, plus it's about to launch a phone network of its own so clearly actually quite likes mobiles. [Standard]